Comment: MAGic: A Phanerozoic Model for the Geochemical Cycling of Major Rock-Forming Components: (Comment on “MAGic: A Phanerozoic Model for the Geochemical Cycling of Major Rock-Forming Components” by Rolf S. Arvidson, Fred T. Mackenzie and Michael Guidry, American Journal of Science, v. 306, p. 135–190.)

Walther, J. V. (2007). Comment: MAGic: A phanerozoic model for the geochemical cycling of major rock-forming components: (Comment on “MAGic: A Phanerozoic model for the geochemical cycling of major rock-forming components” by Rolf S. Arvidson, Fred T. Mackenzie and Michael Guidry, American Journal of Science, v. 306, p. 135–190.). American Journal of Science, 307(5), 856–857. https://doi.org/10.2475/05.2007.04